# Senior Field Service Engineer (FSE) at Epirus

> United States · Senior · Software engineering · open. Source: https://alderhq.app/jobs/greenhouse%3Aepirus%3A5789622004 (read 2026-11-11).

## Facts (observed)

- Company: [Epirus](https://alderhq.app/companies/epirus)
- Location text: Torrance, California, United States; Torrance, California
- Where it can be done from (inferred): United States (evidence: "Location: Torrance, California, United States; Torrance, California")
- Posted: 2026-02-10 (274 days ago)
- First seen by alder: 2026-11-07 · last verified: 2026-11-07
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://www.epirusinc.com/open-roles?gh_jid=5789622004

## Pay and sponsorship

- Posted pay: $114k–$134k per year (from the listing's pay field)
- Market band for similar posted roles (United States, n 4656): p25 $155k, median $180k, p75 $207k

## Description (the employer's text)

### About Epirus

Epirus is a high-growth technology company developing solid-state, software-defined directed energy systems that enable unprecedented counter-electronics effects and power management solutions to optimize power efficiency in defense and commercial applications. With a constant emphasis on innovation, we are redefining the future of power to bring tomorrow’s capabilities to life, today. And that’s just the beginning.

Job Summary: Epirus is seeking a Field Service Engineer (FSE) III with the ability to provide advanced technical support, troubleshooting, and operational oversight in support of Epirus High Power Microwave Counter Unmanned Aerial Systems (HPM-CUAS). This individual will work as a member of a small team with a primary focus on the maintenance, training support and sustainment of fielded HPM assets. The FSE will directly support the maintenance of the fielded HPM-CUAS equipment, re-installation of Line repairable units (LRUs), training, integration, and sustainment of these solutions with existing client infrastructure at CONUS and OCONUS locations. Candidate will provide hands-on support for HPM-CUAS technical, network, and integration projects. This role requires hands-on expertise in electrical, mechanical, and software systems, as well as the ability to work in high-pressure situations supporting defense operations.

This position requires a high degree of technical skill, personal resilience and flexibility, strong interpersonal skills, and the ability to work as part of a cross-functional team in a variety of physical environments.

### Responsibilities

- Work closely with engineering teams to provide feedback on system performance and potential design improvements.
- Coordinate with project managers, logistics personnel, and customers to ensure timely resolution of issues.
- Conduct install/uninstall of HPM-CUAS systems in a variety of locations / environmental conditions to support client operations, test and evaluations, Tactics, Techniques and Procedure (TTP) / Doctrine development, and New Equipment Training (NET) courses.
- Make recommendations on equipment modifications/upgrades based on experience gained through testing and operational use of HPM-CUAS systems.
- Deploy overseas locations to perform technical inspections, system checks, fault diagnosis, identify cause of failures, and replace Line Repairable Unit (LRU), test and restore HPM-CUAS systems to full functionality.
- Conduct advanced programming of HPM-CUAS systems (install/upgrade firmware, software upgrades, etc.).
- Work with the Epirus training and enablement team to develop and conduct training on the proper care, use, maintenance, and preventive maintenance of systems.
- Work closely with engineering teams to provide feedback on system performance and potential design improvements.
### Basic Qualifications

- Bachelor’s degree in Electrical Engineering, Mechanical Engineering, Physics, or a related technical field AND minimum 5 years of related experience (or 3 years and a Master’s degree).
- Proficiency in troubleshooting and repair of electronic and mechanical systems.
- Knowledge of high-power RF generation, wave propagation, and directed energy principles.
- Familiarity with test equipment (oscilloscopes, spectrum analyzers, RF power meters, etc.).
- Strong technical writing and verbal communication skills.
- Ability to provide technical advice and guidance on installation, adaptation, configuration and/or enhancement of company technical products, programs, and systems.
- Candidate must hold a valid U.S. passport or have the ability to obtain a U.S. passport.
- Military experience with CUAS Systems (RF Detection, Radar, EO/ IR Optical systems, Command and Control (C2) Systems.
- Experience working in field operations, including deployment in austere or challenging environments.
- Experience working independently or as a team member to solve project and/or engineering problems.
- Ability to use and communicate a wide variety of technical data from OEM manuals, engineering drawings, etc. to engineers as well as to non-technical system end users.

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/greenhouse%3Aepirus%3A5789622004 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.